mocoso
/moˈkoso/ · B1 · adj
having lots of mucus
🤧 moco (snot) + -oso (full of) = snotty, like a snot-nosed brat
Moco is Spanish for snot or mucus, and the suffix -oso means full of, as in famoso or peligroso. So mocoso literally means snotty. Like the English snot-nosed kid, it also means a cheeky brat.